Mbh 6.77.3c

Hearing these words, the Dhartarashtras, thus urged on by the command of their eldest brother and unable to put up (with the foe), quickly rushed, with upraised weapons, for slaying Dhrishtadyumna like fierce comets at the hour of the universal dissolution. Taking up their beautiful bows, those heroes, making the very earth shiver with the twang of their bowstring and the rattle of their car-wheels, showered shafts on Drupada’s son, like the clouds covering the mountain-breast with torrents of rain. But that hero conversant with all modes of warfare, though thus struck with sharp arrows in that battle, did not waver. On the other hand, that mighty car-warrior, the youthful son of Drupada, beholding those heroic sons of thine staying before him in battle and exerting themselves to their utmost being desirous of slaying them applied that fierce weapon called Pramohana and engaged with thy sons, O king, like Indra with the Danavas in battle. Then those heroic warriors were deprived of their senses, their minds and strength afflicted by the Pramohana weapon. And the Kauravas fled away in all directions, with their steeds and elephants and cars, beholding those sons of thine deprived of their senses in a swoon like those whose hours had come. And at that time Drona, the foremost of all wielders of weapons, approaching Drupada, pierced him with three fierce shafts. And that monarch then, O king, viz., Drupada, deeply pierced by Drona, left the battle, O Bharata, remembering his former hostility (with Bharadwaja’s son). Thereupon Drona endued with great prowess having thus vanquished Drupada, blew his conch. And hearing the blare of his conch, all the Somakas were struck with fear. Then Drona, possessed of great energy, that foremost of all wielders of weapons, heard of thy sons being deprived of their senses in battle with the Pramohana weapon.